The contract for the Mondragón-Elorrio-Bergara section was awarded by Spain’s rail infrastructure manager Adif. OHL has a 40% share of the project, with the remainder taken by two of its subsidiaries - Sobrino (20%) and G & O (10%) – and by Geotunel (30%), which specialises in underground works.
The primary part of the project involves the construction of three tunnels with a total length of just over 6.3km, making up more than 89% of the contract length. It will be built by the New Austrian Tunnelling Method.
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